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Entry Test MCQ :: MCAT ECAT Chemistry Paper


31.  The hardest of the following solids is
A. sodium B. diamond
C. graphite D. magnesium

32.  Which of the following elements has greater 1st ionization energy
A. B B. C
C. N D. O

33.  Which of the solid does not contain covalent bond
A. copper B. ice
C. diamond D. graphite

34.  Which of the following molecule is polar
A. CCI4 B. CO2
C. BF3 D. none of the above

35.  The balanced chemical equation for the reaction which occurs when Be is added to water is
A. Be+2H2O?Be (OH)2+H2 B. Be+H2O?Be (OH)2+H2
C. Be+H2O?[Be (OH)4]+2+H2 D. no reaction

36.  The number of bonds in nitrogen molecule is
A. one ? one ? bond B. two ? one ? bond
C. one ? and two ? bond D. three ? bonds only

37.  Which of the following theories is superior to others
A. VSEPR B. VBT
C. MOT D. none of the above

38.  Which of the following relation is not possible
A. ?H = ?H1 + ?H2 = ?H3 B. ?E = E1 + E2 = E3
C. q = q1 + q2 = q3 D. ??H (cycle) = 0

39.  Which of the following is not characteristics of reversible reaction
A. whole amount of reactant does not change into product B. chemical equilibrium is established
C. a catalyst changes the direction of reaction D. rate of forward reaction decreases as reaction proceeds

40.  Which of the following points are important in connection with equilibrium constant.
A. Kc is constant at given temperature B. Kc is unaffected by change in concentration of reactants or products
C. Kc indicates the extent of reaction but not about the rate of reaction. D. All of the above




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